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United States Patent | 5,655,184 |
Bergen | August 5, 1997 |
An ionographic printer bar directs a stream of ions from an integral ion source having a planar surface for emitting ions to a charge receptor to create an electrostatic latent image thereon. The ion stream passes through an aperture having associated therewith a focusing pinch electrode for narrowing the ion stream to a preselected width, displacing electrodes for positioning the narrowed ion stream within the aperture, and focus electrodes. The integral ion source is placed in propinquity in relation to the ionographic printer bar. The planar design of ion source allows reduce size of the ionographic printer bar because no support frame is needed and allow increase robustness of the ionographic printer bar which makes it easy to install in a machine and easy to clean.
Inventors: | Bergen; Richard F. (Ontario, NY) |
Assignee: | Xerox Corporation (Stamford, CT) |
Appl. No.: | 537016 |
Filed: | October 2, 1995 |
Current U.S. Class: | 399/135; 347/123 |
Intern'l Class: | G03G 015/05 |
Field of Search: | 355/200,210,219,221,222,225 347/111,120,123 430/53 399/100,130,135,168,169,170 |
4435066 | Mar., 1984 | Tarumi et al. | 347/123. |
4763141 | Aug., 1988 | Gundlach et al. | 347/123. |
4839670 | Jun., 1989 | Snelling | 347/123. |
4875062 | Oct., 1989 | Rakov | 347/123. |
5153435 | Oct., 1992 | Greene | 347/123. |
5206670 | Apr., 1993 | Nishikawa | 347/123. |
5257045 | Oct., 1993 | Bergen et al. | 347/123. |
5450103 | Sep., 1995 | Kubelik | 347/123. |
5450115 | Sep., 1995 | Bergen et al. | 347/123. |